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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 27. Отображено 26.
30-03-2017 дата публикации

CURRENT MANAGED DRIVE SYSTEM FOR ENERGIZING CONTACTORS AND OTHER COIL-BASED EXTERNAL LOADS

Номер: US20170092449A1
Автор: Christopher Derek Thornton, Adrian E. Vandergrift, THORNTON CHRISTOPHER DEREK, VANDERGRIFT ADRIAN E, Thornton Christopher Derek, Vandergrift Adrian E.
Принадлежит: HAMILTON SUNDSTRAND CORPORATION

The disclosure herein relates to a current managed drive system for utilizing a current output to engage and hold a contactor. The current managed drive system includes the contactor comprising a single coil that has a momentary high pull-in current and a low hold current and a contactor coil drive configured to control the current output to the contactor to match the momentary high pull-in current to engage the contactor and the low hold current to hold the contactor. 1. A current managed drive system for utilizing a current output to engage and hold a contactor , comprising:the contactor comprising a single coil that has a momentary high pull-in current and a low hold current; anda contactor coil drive configured to control the current output to the contactor to match the momentary high pull-in current to engage the contactor and the low hold current to hold the contactor.2. The current managed drive system of claim 1 , wherein the contactor coil drive is configured to utilize a high efficiency current managed drive to manage the momentary high current to engage the contactor.3. The current managed drive system of claim 1 , wherein the contactor coil drive is configured to limit the current output to the low hold current to hold the contactor closed.4. The current managed drive system of claim 1 , wherein the contactor coil drive comprising an enabled switch configured to control the current output on or off5. The current managed drive system of claim 1 , wherein the contactor coil drive is configured to vary an output current limit value in real time to initially control the current output to match the momentary high pull-in current and then substantially reduce the current output to the low hold current to hold the contactor closed.6. The current managed drive system of claim 1 , wherein the coil drive comprises:a direct current (DC) voltage source configured to provide direct current to a converter.7. The current managed drive system of claim 1 , wherein the ...

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Номер записи: 1
29-09-2016 дата публикации

VOLTAGE REGULATOR INCLUDING A BUCK CONVERTER PASS SWITCH

Номер: US20160285364A1
Автор: Brennan Fox, Christopher Derek Thornton, Kevin C. Peterson, Adrian E. Vandergrift, FOX BRENNAN, THORNTON CHRISTOPHER DEREK, PETERSON KEVIN C, VANDERGRIFT ADRIAN E, Fox Brennan, Thornton Christopher Derek, Peterson Kevin C., Vandergrift Adrian E.
Принадлежит:

A voltage driver includes a voltage input, a voltage regulation controller including an on/off input. The voltage regulation controller is configured to control a switching converter in a first mode, a second mode, and at least one additional mode. The switching converter is configured to operate as an open pass switch in the first mode, is configured to operate as a closed pass switch in the second mode, and is configured to operate as an overcurrent and overvoltage protection switch in the at least one additional mode. A discrete output driver control and monitoring circuit can be used to control the switching converter. The output driver control and monitoring circuit includes a controller coupled to a communication bus and is configured to provide high level control instructions to the communication bus. 1. A voltage driver comprising:a voltage input;a voltage regulation controller including an on/off input, the voltage regulation controller configured to control a switching converter in a first mode, a second mode, and at least one additional mode; andthe switching converter being configured to operate as an open pass switch in the first mode, configured to operate as a closed pass switch in the second mode; and configured to operate as an overcurrent and overvoltage protection switch in the at least one additional mode.2. The voltage driver of claim 1 , wherein the first mode is a 0% duty cycle claim 1 , the second mode is a 100% duty cycle claim 1 , and the at least one additional mode is greater than 0% duty cycle and less than 100% duty cycle.3. The voltage driver of claim 1 , wherein the switching converter is configured as a fully open switch in the first mode and a fully closed switch in the second mode.4. The voltage driver of claim 3 , wherein an overvoltage threshold of the voltage driver in said at least one additional mode is dependent on a duty cycle of the switching converter in the at least one additional mode.5. The voltage driver of claim 1 , ...

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Номер записи: 2
19-12-2013 дата публикации

SYSTEM AND METHOD FOR CONTROLLED OVERVOLTAGE DETECTION

Номер: US20130335872A1
Автор: Vandergrift Adrian E.
Принадлежит: HAMILTON SUNDSTRAND CORPORATION

An overvoltage detection system includes a sensed voltage; an active reference module that generates an active reference signal having a magnitude that varies inversely with a magnitude of the sensed voltage; and a timed trip module that includes a resistor and capacitor, and detects an overvoltage condition as a function of the sensed voltage, the active reference signal, and time. 1. An overvoltage detection system comprising:a sensed voltage;an active reference module that generates an active reference signal having a magnitude that varies inversely with a magnitude of the sensed voltage; anda timed trip module that includes a reference resistor and a capacitor, wherein the timed trip module detects an overvoltage condition as a function of the sensed voltage, the active reference signal, and time.2. The system of claim 1 , wherein the active reference module comprises:a non-inverting amplifier that receives the sensed voltage as input; andan inverting amplifier that receives an output of the non-inverting amplifier as its inverting input and an offset voltage as its non-inverting input, wherein the active reference signal is output from the inverting amplifier.3. The system of claim 1 , wherein the timed trip module comprises:a first comparator, wherein when the sensed voltage is larger than a fixed reference voltage, the capacitor begins to charge; anda second comparator, wherein when a voltage across the capacitor is larger than the active reference signal, the output of the comparator indicates an overvoltage fault.4. The system of claim 1 , further comprising:a scaling module for scaling down a three-phase AC input voltage; anda high WINS OR'ing module for converting the scaled three-phase AC input voltage into a single DC voltage, wherein the sensed voltage is equal to the single DC voltage.5. The system of claim 4 , further comprising a fast trip module for immediately detecting an overvoltage fault if the sensed voltage is greater than a fast trip ...

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Номер записи: 3
02-01-2020 дата публикации

SHORTED ROTATING DIODE PROTECTION FOR SYNCHRONOUS MACHINES

Номер: US20200007057A1
Автор: Defenbaugh John F., Golden Brian R., Vandergrift Adrian E.
Принадлежит:

An assembly according to an embodiment of the present disclosure includes, among other things, a synchronous machine including a rotating portion and a stationary portion, the rotating portion including at least one rotating diode coupled to a field winding, and the stationary portion including a stator winding and an exciter winding. A control unit includes a first gate and a second gate. The exciter winding is connected in series to the first gate and the second gate during a first operating mode to energize the exciter winding. The exciter winding is electrically connected in series to a first gate but is electrically disconnected from the second gate in a second, different operating mode to electrically disconnect the exciter winding from an exciter energy source. A method of operating a synchronous machine is also disclosed. 1. An assembly comprising:a synchronous machine including a rotating portion and a stationary portion, the rotating portion including at least one rotating diode coupled to a field winding, and the stationary portion including a stator winding and an exciter winding;a control unit including a first gate and a second gate;wherein the exciter winding is connected in series to the first gate and the second gate during a first operating mode to energize the exciter winding; andwherein the exciter winding is electrically connected in series to the first gate but is electrically disconnected from the second gate in a second, different operating mode to electrically disconnect the exciter winding from an exciter energy source.2. The assembly as recited in claim 1 , wherein the exciter energy source is electrically disconnected from the exciter winding in response to closing the first gate and opening the second gate.3. The assembly as recited in claim 1 , wherein the stationary portion includes a rectifier that electrically connects the exciter winding to the exciter energy source during the first operating mode.4. The assembly as recited in claim ...

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Номер записи: 4
18-01-2018 дата публикации

Exciter drive circuit including configurable flyback unit with fast energy field collapse

Номер: US20180019691A1
Автор: Adrian E. Vandergrift
Принадлежит: Hamilton Sundstrand Corp

A power system includes an integrated drive generator (IDG) including an exciter field winding. A generator control unit (GCU) includes exciter drive circuit configured to electrically energize the exciter field winding, and a main stator configured to output voltage to at least one electrical load. The exciter drive circuit includes a dynamic flyback unit configured to selectively operate the exciter drive circuit between a first mode and a second mode different from the first mode based on a change in the at least one electrical load.

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Номер записи: 5
31-01-2019 дата публикации

VOLTAGE REGULATOR INCLUDING A BUCK CONVERTER PASS SWITCH

Номер: US20190036451A1
Автор: Fox Brennan, Peterson Kevin C., Thornton Christopher Derek, Vandergrift Adrian E.
Принадлежит:

A voltage driver includes a voltage input, a voltage regulation controller including an on/off input. The voltage regulation controller is configured to control a switching converter in a first mode, a second mode, and at least one additional mode. The switching converter is configured to operate as an open pass switch in the first mode, is configured to operate as a closed pass switch in the second mode, and is configured to operate as an overcurrent and overvoltage protection switch in the at least one additional mode. A discrete output driver control and monitoring circuit can be used to control the switching converter. The output driver control and monitoring circuit includes a controller coupled to a communication bus and is configured to provide high level control instructions to the communication bus. 1. A discrete output driver control and monitoring circuit comprising:a microprocessor controller coupled to a communication bus and configured to provide high level control instructions to the communication bus;a programmable circuit coupled to the communications bus and configured to convert a high level control instruction received from the communications bus to at least one control signal;a voltage driver connected to said programmable circuit such that said at least one control signal sets an operational mode of at least one component of the voltage driver; andwherein the voltage driver includes a voltage input, a voltage regulation controller including an on/off input, the voltage regulation controller configured to control a switching converter in a first mode, a second mode, and at least one additional mode; the switching converter being configured to operate as an open pass switch in the first mode, configured to operate as a closed pass switch in the second mode, and configured to operate as an overcurrent and overvoltage protection switch in the at least one additional mode, wherein the first mode is a 0% duty cycle, the second mode is a 100% duty ...

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Номер записи: 6
15-02-2018 дата публикации

TRANSIENT VOLTAGE PROTECTION CIRCUITS

Номер: US20180048145A1
Автор: "ODonnell Sean P.", Lefavour David W., Vandergrift Adrian E.
Принадлежит: HAMILTON SUNDSTRAND CORPORATION

A transient voltage protection circuit includes an inductor with a source-side terminal and a device-side terminal, a first stage with a protection element connected to the inductor source-side terminal, and a second stage with a protection element connected to the inductor device-side terminal. A ground terminal is connected to the inductor device-side terminal through the first stage and to the inductor source-side terminal through the first stage. The second stage defines a single conductive path between the inductor source-side terminal and the ground terminal. 1. A transient voltage protection circuit , comprising;an inductor with a source-side terminal and a device-side terminal;a first stage with a protection element connected to the inductor device-side terminal;a second stage with a protection element connected to the inductor source-side terminal; anda ground terminal connected to the inductor source-side terminal through the second stage and to the inductor device-side terminal of the inductor through the first stage,wherein the second stage defines a single conductive path between the inductor source-side terminal and the ground terminal.2. The circuit as recited in claim 1 , wherein the first stage defines a single conductive path between the inductor device-side terminal and the ground terminal.3. The circuit as recited in claim 1 , wherein the first stage protection element comprises a diode connected in series between a bus lead and a ground lead.4. The circuit as recited in claim 3 , wherein the diode is arranged to oppose current flow between the bus lead and the ground lead.5. The circuit as recited in claim 3 , wherein the diode is connected directly to the ground terminal.6. The circuit as recited in claim 1 , wherein the second stage protection element comprises a gas discharge tube connected in series between a bus lead and a ground lead.7. The circuit as recited in claim 6 , wherein the gas discharge tube has an inductor-side terminal and a ...

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Номер записи: 7
14-02-2019 дата публикации

SHORTED ROTATING DIODE PROTECTION FOR SYNCHRONOUS MACHINES

Номер: US20190052204A1
Автор: Defenbaugh John F., Golden Brian R., Vandergrift Adrian E.
Принадлежит:

An assembly according to an embodiment of the present disclosure includes, among other things, a synchronous machine including a rotating portion and a stationary portion, the rotating portion including at least one rotating diode coupled to a field winding, and the stationary portion including a stator winding and an exciter winding. A control unit includes a first gate and a second gate. The exciter winding is connected in series to the first gate and the second gate during a first operating mode to energize the exciter winding. The exciter winding is electrically connected in series to a first gate but is electrically disconnected from the second gate in a second, different operating mode to electrically disconnect the exciter winding from an exciter energy source. A method of operating a synchronous machine is also disclosed. 1. An assembly comprising:a synchronous machine including a rotating portion and a stationary portion, the rotating portion including at least one rotating diode coupled to a field winding, and the stationary portion including a stator winding and an exciter winding;a control unit including a first gate and a second gate;wherein the exciter winding is connected in series to the first gate and the second gate during a first operating mode to energize the exciter winding; andwherein the exciter winding is electrically connected in series to a first gate but is electrically disconnected from the second gate in a second, different operating mode to electrically disconnect the exciter winding from an exciter energy source.2. The assembly as recited in claim 1 , wherein the exciter energy source is electrically disconnected from the exciter winding in response to closing the first gate and opening the second gate.3. The assembly as recited in claim 1 , wherein the stationary portion includes a rectifier that electrically connects the exciter winding to the exciter energy source during the first operating mode.4. The assembly as recited in claim 3 ...

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Номер записи: 8
08-09-2022 дата публикации

LOW-POWER BIAS SUPPLY TO FACILITATE THE LOW-RPM STARTUP OF THREE-PHASE AC AIRCRAFT GENERATORS

Номер: US20220286068A1
Автор: Congdon Michael, Thornton Christopher Derek, Vandergrift Adrian E.
Принадлежит:

System and methods for providing power to a generator control circuit are provided. Aspects include a generator, a first power converter comprising a first input and a first output, the first input coupled to an output of the generator and the first output coupled to a valve circuit, a second power converter comprising a second input and a second output, the second input coupled to the output of the generator and the second output coupled to the valve circuit, and a controller configured to monitor a characteristic associated with the generator, cause the first power converter to provide power to the valve circuit when the characteristic of the generator is within a first range of characteristic values, and cause the second power converter to provide power to the valve circuit when the characteristic of the generator is within a second range of characteristic values. 1. A power supply for a generator control circuit comprising:a generator;a first power converter comprising a first input and a first output, the first input coupled to an output of the generator and the first output coupled to a valve circuit;a second power converter comprising a second input and a second output, the second input coupled to the output of the generator and the second output coupled to the valve circuit; and monitor a characteristic associated with the generator;', 'cause the first power converter to provide power to the valve circuit when the characteristic of the generator is within a first range of characteristic values; and', 'cause the second power converter to provide power to the valve circuit when the characteristic of the generator is within a second range of characteristic values., 'a controller configured to2. The power supply of claim 1 , wherein the first range of characteristic values is lower than the second range of characteristic values.3. The power supply of claim 1 , wherein the first range of characteristic values overlaps with the second range of characteristic ...

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Номер записи: 9
19-08-2021 дата публикации

CURRENT LIMITING CIRCUIT FOR A CONTROL CIRCUIT FOR CONTROLLING A SEMICONDUCTOR SWITCH SYSTEM

Номер: US20210257831A1
Автор: Beneditz Arthur J., Fox Brennan, Hoegberg Lon R., Vandergrift Adrian E.
Принадлежит:

A power distribution system and method has a controller and at least one semiconductor switch. The power distribution system additionally has an on status detector which detects the status of the semiconductor switches, and an overcurrent status circuit which checks for overcurrent conditions. 1. A power distribution circuit comprising;a semiconductor switch;a current shunt connected to said semiconductor switch;a current limit circuit connected to a control input of the semiconductor switch and configured to limit a current through the current shunt;an on status detector connected to said semiconductor switch and an on status output line such that a semiconductor on signal is output on said on status output line when said semiconductor switch is on;a controller connected to an input power source and to a control input of said semiconductor switch; andan overcurrent detection circuit connected to said input power source, said semiconductor switch, and an overcurrent status circuit such that said overcurrent detection circuit is capable of detecting an overcurrent fault in said semiconductor switch.2. The power distribution circuit of claim 1 , wherein said overcurrent detection circuit is capable of tripping and latching off said semiconductor switch after detecting an overcurrent condition.3. The power distribution circuit of claim 1 , wherein the current limit circuit comprises one of an operational amplifier and a comparator.4. The power distribution circuit of claim 3 , wherein a magnitude of precision of the current limiter is dependent on the one of the operational amplifier and the comparator.5. The power distribution circuit of claim 4 , wherein the current limit has a precision in the range of + or −3 Amps.6. The power distribution circuit of claim 4 , wherein the current limit has a precision in the range of + or −1.5 Amps.7. The power distribution circuit of claim 4 , wherein the current limit has a precision of less than or equal to 20% of a nominal ...

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Номер записи: 10
04-11-2021 дата публикации

SYSTEMS AND METHODS FOR GENERATOR CONTROL

Номер: US20210344197A1
Автор: Pennam Hemanth Kumar, Vandergrift Adrian E.
Принадлежит:

A power quality monitor (PQM) module includes a solid-state semi-conductor switch having a voltage input, two signal inputs and two voltage outputs. A voltage input line is electrically connected to the voltage input. A PQM signal input line is operatively connected to at least one of the two signal inputs. A voltage output line is electrically connected to one of the two voltage outputs to provide power to a load. A method of controlling a GCB includes opening a solid-state semi-conductor switch when a PQM signal is powered at a first logic voltage. The method includes closing the solid-state semi-conductor switch when a PQM signal is powered at a second logic voltage lower than the first logic voltage to allow a voltage from a GCU to go to the GCB. 1. A power quality monitor (PQM) module , comprising:a solid-state semi-conductor switch having a voltage input, two signal inputs and two voltage outputs;a voltage input line electrically connected to the voltage input;a PQM signal input line operatively connected to at least one of the two signal inputs; anda voltage output line electrically connected to one of the two voltage outputs to provide power to a load.2. The PQM module of claim 1 , further comprising a differential amplifier along the voltage output line.3. The PQM module of claim 1 , further comprising a comparator along the voltage output line.4. The PQM module of claim 1 , a circuit between the voltage input line and the PQM signal input line.5. The PQM module of claim 4 , wherein the circuit includes a resistor.6. The PQM module of claim 4 , wherein the circuit includes a zener diode clamp.7. The PQM module of claim 1 , wherein the voltage input line provides a nominal 28V.8. The PQM module of claim 1 , wherein the voltage output line is a first voltage output line claim 1 , wherein the PQM module includes a second voltage output line electrically connected to a second of the two voltage outputs to provide sense voltage.9. The PQM module of claim 8 , ...

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Номер записи: 11
22-11-2018 дата публикации

AEROSPACE LIGHTNING PROTECTION FOR ELECTRICAL DEVICES

Номер: US20180337529A1
Автор: "ODonnell Sean P.", Fox Brennan, Kheraluwala Mustansir, Lefavour David W., Vandergrift Adrian E.
Принадлежит:

A transient voltage protection circuit. The transient voltage protection circuit including a resistor with a source-side terminal and a device-side terminal, a first stage with a first protection element connected to the resistor device-side terminal, a second stage with a second protection element connected to the resistor source-side terminal, and a ground terminal connected to the resistor source-side terminal through the second stage and to the resistor device-side terminal of the resistor through the first stage. 1. An electrical voltage and current transient protection circuit for suppression of lightning induced transients in an aircraft , the protection circuit comprising;a resistor with a source-side terminal and a device-side terminal;a first stage with a first protection element connected to the resistor device-side terminal;a second stage with a second protection element connected to the resistor source-side terminal; anda ground terminal connected to the resistor source-side terminal through the second stage and to the resistor device-side terminal of the resistor through the first stage,wherein the second stage defines a single conductive path between the resistor source-side terminal and the ground terminal.2. The transient protection circuit as recited in claim 1 , wherein the first stage defines a conductive path between the resistor device-side terminal and the ground terminal.3. The transient protection circuit as recited in claim 1 , wherein the first protection element comprises a transient voltage suppression diode connected in series between the resistor device-side terminal and the ground terminal.4. The transient protection circuit as recited in claim 3 , wherein the transient voltage suppression diode is arranged to oppose current flow between the resistor device-side terminal and the ground terminal.5. The transient protection circuit as recited in claim 1 , wherein first protection element comprises a voltage clamping silicon device.6. ...

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Номер записи: 12
21-11-2019 дата публикации

UNIFORM GENERATOR CONTROL UNIT INCLUDING MULTIPLE PERMANENT MAGNET GENERATOR INPUTS

Номер: US20190352017A1
Автор: FISHER BENJAMIN, Gillette Christopher, Goodrich Timothy Arn, Knope Daniel, Sievert Dana A., Thornton Christopher Derek, Vandergrift Adrian E., Wetzel Richard T.
Принадлежит:

A generator control unit includes a plurality of permanent magnet generator (PMG) inputs, a transformer including a multi-configuration input winding and at least one output winding. Each PMG input in the plurality of PMG inputs is connected to the multi-configuration input winding at a corresponding input winding input. 1. A generator control unit comprising:a plurality of permanent magnet generator (PMG) inputs;a transformer including a multi-configuration input winding and at least one output winding;each PMG input in the plurality of PMG inputs being connected to the multi-configuration input winding at a corresponding input winding input.2. The generator control unit of claim 1 , wherein the multi-configuration input winding is a multi-tapped primary winding having a plurality of phase legs.3. The generator control unit of claim 1 , wherein the multi-configuration input winding is a multiple isolated series winding.4. The generator control unit of claim 1 , wherein the multi-configuration input winding includes a plurality of parallel primary windings claim 1 , each of the parallel primary windings having a distinct parallel primary winding configuration.5. The generator control unit of claim 4 , wherein the distinct parallel primary winding configuration includes a distinct number of winding turns from each other parallel primary winding.6. The generator control unit of claim 5 , wherein each of the parallel winding configurations corresponds to at least one PMG input in the plurality of PMG inputs.7. The generator control unit of claim 1 , wherein the at least one output winding includes a single output winding.8. The generator control unit of claim 1 , wherein the at least one output winding includes a plurality of output windings.9. The generator control unit of claim 1 , wherein the multi-configuration input winding includes a plurality of phase legs claim 1 , with each phase leg comprising an identical number of isolated (floating) windings.10. The ...

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Номер записи: 13
28-09-2016 дата публикации

Voltage regulator including a buck converter pass switch

Номер: EP3073625A2
Автор: Adrian E. Vandergrift, Brennan FOX, Christopher Derek THORNTON, Kevin C. PETERSEN
Принадлежит: Hamilton Sundstrand Corp

A voltage driver 10 includes a voltage input, a voltage regulation controller 110 including an on/off input 150. The voltage regulation controller 110 is configured to control a switching converter in a first mode, a second mode, and at least one additional mode. The switching converter is configured to operate as an open pass switch in the first mode, is configured to operate as a closed pass switch in the second mode,, and is configured to operate as an overcurrent and overvoltage protection switch in the at least one additional mode. A discrete output driver control and monitoring circuit can be used to control the switching converter. The output driver control and monitoring circuit includes a controller 30 coupled to a communication bus 80 and is configured to provide high level control instructions to the communication bus 80.

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Номер записи: 14
24-11-2010 дата публикации

Control circuit for controlling a semiconductor switch system

Номер: EP2254246A1
Автор: Adrian E. Vandergrift
Принадлежит: Hamilton Sundstrand Corp

A semiconductor switch system and method has a controller (110) and at least one semiconductor switch (150). The semiconductor switch system additionally has an on status detector (160) which detects the status of the semiconductor switch, and an overcurrent status circuit (170) which checks for overcurrent conditions.

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Номер записи: 15
21-11-2018 дата публикации

Aerospace lightning protection for electrical devices

Номер: EP3404792A1
Автор: Adrian E. Vandergrift, Brennan FOX, David W. Lefavour, Mustansir Kheraluwala, Sean P. O'Donnell
Принадлежит: Hamilton Sundstrand Corp

A transient voltage protection circuit. The transient voltage protection circuit including a resistor (106) with a source-side terminal and a device-side terminal, a first stage (102) with a first protection element connected to the resistor device-side terminal, a second stage (104) with a second protection element connected to the resistor source-side terminal, and a ground terminal (20) connected to the resistor source-side terminal through the second stage and to the resistor device-side terminal of the resistor through the first stage (102).

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Номер записи: 16
06-07-2023 дата публикации

Active rectification excitation

Номер: US20230216424A1
Автор: Adrian E. Vandergrift, Brennan FOX
Принадлежит: Hamilton Sundstrand Corp

A system includes an alternating current (AC) bus. An active rectifier is connected to receive alternating current from the AC bus. An exciter inductor coil is connected to receive direct current (DC) output from the active rectifier. A method includes performing current control on an alternating current (AC) bus to output DC current to an exciter inductor coil.

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Номер записи: 17
02-07-2009 дата публикации

Shorted rotating diode detection and protection

Номер: US20090167257A1
Автор: Adrian E. Vandergrift, Sumita Tandon, Vijay K. Maddali
Принадлежит: Hamilton Sundstrand Corp

An electric generator with a rotating diode fault detection device built in that operates by comparing a voltage buildup across the exciter DC supply with a preset threshold value and determining if a fault condition is present based on the comparison.

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Номер записи: 18
18-01-2023 дата публикации

Systems and methods for overcurrent protection

Номер: EP4084334A3
Автор: Adrian E. Vandergrift, Hemanth Kumar Pennam
Принадлежит: Goodrich Aerospace Services Pvt Ltd, Hamilton Sundstrand Corp

A power distribution circuit (100) includes a power input (102) in electrical communication with a power input line (104), a switching circuit (106) electrically connected to the power input line (102), and an overcurrent protection circuit (108) electrically connected to the power input line (102). The overcurrent protection circuit (108) includes a discrete silicon controlled rectifier (SCR) circuit (110), and a pulse qualifier configured and adapted to drive the discrete SCR circuit (110). A method for controlling a power distribution circuit (100) includes detecting an ON status of at least a switching circuit (106). A semi-conductor control signal line (132) connects the semi-conductor switch (126) and the voltage command circuit (130). The method includes detecting an overcurrent status of the switching circuit (106) with an overcurrent detection circuit (108). The method includes clamping voltage on the semi-conductor control signal line (132) to cause the semi-conductor switch (126) to be turned off.

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Номер записи: 19
08-11-2023 дата публикации

Electric power generation system (epgs) controller excitation system architecture for variable frequency generators

Номер: EP4274085A1
Автор: Adrian E. Vandergrift, Dhaval S. Patel, Sunil S. Patel
Принадлежит: Hamilton Sundstrand Corp

A system includes a generator control unit (GCU). The GCU (102) includes a first rectifier (106) and a second rectifier (108). Each of the first rectifier (106) and the second rectifier (108) has a separate input to receive AC power from a separate respective permanent magnet generator (PMG). A method includes supplying AC power from a first PMG of a variable frequency generator (VFG) to a first rectifier (106) of a generator control unit GCU that is operatively connected to control the VFG. The method includes supplying AC power from a second PMG to a second rectifier (108) of the GCU. The first PMG supplies a lower AC voltage to the first rectifier (106) than the second PMG supplies to the second rectifier (108).

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Номер записи: 20
05-03-2024 дата публикации

Saturable reactors in generator control units

Номер: US11923800B2
Автор: Adrian E. Vandergrift, Dhaval S. Patel, Sunil S. Patel
Принадлежит: Hamilton Sundstrand Corp

A system includes a generator control unit (GCU). The GCU includes a saturable reactor and a rectifier. Each of the saturable reactor and the rectifier has a separate input to receive AC power from a separate respective permanent magnet generator (PMG). A method includes supplying AC power from a first permanent magnet generator (PMG) of a generator to a saturable reactor of a generator control unit (GCU) that is operatively connected to control the generator. The method includes supplying AC power from a second PMG to a rectifier of the GCU, wherein the first PMG supplies a lower AC voltage to the saturable reactor than the second PMG supplies to the rectifier.

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Номер записи: 21
12-07-2023 дата публикации

Active rectification excitation

Номер: EP4210214A1
Автор: Adrian E. Vandergrift, Brennan FOX
Принадлежит: Hamilton Sundstrand Corp

A system (100) includes an alternating current (AC) bus (102). An active rectifier (104) is connected to receive alternating current from the AC bus. An exciter inductor coil (106) is connected to receive direct current (DC) output from the active rectifier (104). A method includes performing current control on an alternating current (AC) bus (102) to output DC current to an exciter inductor coil (106).

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Номер записи: 22
08-11-2023 дата публикации

Saturable reactors in generator control units

Номер: EP4274087A1
Автор: Adrian E. Vandergrift, Dhaval S. Patel, Sunil S. Patel
Принадлежит: Hamilton Sundstrand Corp

A system (100) includes a generator control unit (GCU) (102). The GCU (102) includes a saturable reactor (106) and a rectifier (108). Each of the saturable reactor (106) and the rectifier (108) has a separate input (110) to receive AC power from a separate respective permanent magnet generator (PMG) (112, 114)). A method includes supplying AC power from a first permanent magnet generator (PMG) (112) of a generator (104) to a saturable reactor (106) of a generator control unit (GCU) (102) that is operatively connected to control the generator (104). The method includes supplying AC power from a second PMG (114) to a rectifier (108) of the GCU (102), wherein the first PMG (112) supplies a lower AC voltage to the saturable reactor (106) than the second PMG (114) supplies to the rectifier (108).

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Номер записи: 23
16-09-2021 дата публикации

Controller for a generator

Номер: US20210288567A1
Автор: Adrian E. Vandergrift, Jordan K. Vanevenhoven, Natalie Filipski, Thomas P. Joyce
Принадлежит: Hamilton Sundstrand Corp

A system including a generator and a controller. The generator includes a permanent magnet generator (PMG), and an exciter. The controller manages operations of the generator. The controller includes an alternating current to direct current (AC-to-DC) converter that generates a direct current (DC) voltage, an exciter drive that provides a DC current to the exciter of the generator using the DC voltage created by the AC-to-DC converter in accordance with the control signal, and a regulator controller that drives the active AC-to-DC converter.

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Номер записи: 24
09-11-2023 дата публикации

Saturable reactors in generator control units

Номер: US20230361700A1
Автор: Adrian E. Vandergrift, Dhaval S. Patel, Sunil S. Patel
Принадлежит: Hamilton Sundstrand Corp

A system includes a generator control unit (GCU). The GCU includes a saturable reactor and a rectifier. Each of the saturable reactor and the rectifier has a separate input to receive AC power from a separate respective permanent magnet generator (PMG). A method includes supplying AC power from a first permanent magnet generator (PMG) of a generator to a saturable reactor of a generator control unit (GCU) that is operatively connected to control the generator. The method includes supplying AC power from a second PMG to a rectifier of the GCU, wherein the first PMG supplies a lower AC voltage to the saturable reactor than the second PMG supplies to the rectifier.

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Номер записи: 25
11-06-2024 дата публикации

Systems and methods for generator control

Номер: US12007419B2
Автор: Adrian E. Vandergrift, Hemanth Kumar Pennam
Принадлежит: Hamilton Sundstrand Corp

A power quality monitor (PQM) module includes a solid-state semi-conductor switch having a voltage input, two signal inputs and two voltage outputs. A voltage input line is electrically connected to the voltage input. A PQM signal input line is operatively connected to at least one of the two signal inputs. A voltage output line is electrically connected to one of the two voltage outputs to provide power to a load. A method of controlling a GCB includes opening a solid-state semi-conductor switch when a PQM signal is powered at a first logic voltage. The method includes closing the solid-state semi-conductor switch when a PQM signal is powered at a second logic voltage lower than the first logic voltage to allow a voltage from a GCU to go to the GCB.

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Номер записи: 26